Mining and loading machine



E. C. IVIORGAN. MINING AND LOADING MACHINE.

APPLICATION FILED SEPT. 30, I9I4. IIENEWED OCT. 4, I920.

Iatemed Aug. 299 T922.

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REIIEWED OCT. 4,1920.

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n) I., r 7 I p., I I 6 E. C. MORGAN. MINING AND LOADING MACHINE.

APPLICATION FILED SEPT. 30. I9I4.

RENEWED OCT.4,1920.

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MINING AND LOADING MACHINE.

APPLICATION FILED sEPI.3o, I9I4. REII'Izv/[D ocT. 4, 1920.

19427;, l 18, Patented Aug. 29., )1922.

9 SHEETS-'SHEET 4.

9 SHEETS-SHEET 5.

Patented Aug. 29., H922.

E. C. MORGAN. MINING AND'LOADING MACHINE.

APPLICATION FILED SEPT.30| 1914. RENEWED OCT. 4, 1920.

E. C. MORGAN. MINING AND LOADING MACHINE. APPLICATION FILED sEPT.3o, I9I4. IIENEwEn ocT. 4, 1920.

n Ww. we Za 9.@ n f @Dm Wa, Aw m9 m u... N ne@ w y my EN@ 2 We 4 IM E. c. MORGAN. MINING AND LOADING MACHINE.

APPLICATION FILED SEPT.30, I9I4. RENEWED OCT-4,1920.

Patem Aug. 299 )1922,

9 SHETS-SHEET Z.

gan

I {fg/1 W .II II I JWN E. C. MORGAN. NHNING AND LOADING MACHINE.

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" To all lwhom it may concern.'

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animan c. momma, or new ro, ir.- Sr.

- AND -IlL/UAJDING MACHINE.

Maarre.

salamanca of teuer-raient gamma@ gung, ggg), Mgg',

application meramente: an, maserati ma. aman. aeaewea @meer a, mao. saranno; croata Be it k'nown that l1, EDMUND C. MORGAN,

.a citizen of the United States, residing at New `iork, in the county of New York and State of New York, have invented certain new and useful Improvements in a Mmmg and Loading Machine, of which the followvin is a specification.

y invention relates to improvements in mining machlnes and has more partlcular reference to an improved machine for completely severing and removing blocks of coal from the wall ofa mine. @ne of the objects of my invention is to provide a machine of this character which will be simple, durable and' reliable in construction and edective and elcient in operation. Other objects of my invention will appear hereinafter.

My invention consists in the construction, combination and arrangement of p arts exemplified in the accompanylng drawlngs, set

' forth in the following description, and em 'braced in the appended claims.`

Referring to the accompanying drawings,

Fig. 1 is a view in side elevation of a mining machine embodying my invention, the machine being shown in the position of just beginning the cutting of a block of material from the wall ofy a mine.

Fig. 2 is a top plan view of the machine shown in Fig.

Fig. 3 is a longitudinal vertical section on the line 3 3 of Fig. 2.

Fig. 4 is a horizontal plane section substantially on the line 4--4 of Fig. 1.

Fig. 5 is a view in front or forward end elevation showing the arrangement of the cutting chain and parts. l

Fig. 6 is an enlarged transverse vertical section substantially on the line 6-6 of Fig. 1.

Fig. 7 is an enlarged detail section on the Fig. 13 is a view' in side elevation looking at the cutting bit side of the chain shown in Fig. 12. A f 4 Fi .14 is a transverse detail section on. the lme 14-14 of Fi 12.

Fig. 15 isa detail? the lines 15-15 of Figs. 12 and 14.

'F ig. 16 is a view similar tovFig. 1 of the rear portion of the machine showing a moditcation wherein a conveyor is used for carr. ing the severed blocks ot coal up the inc ined runway and discharging them from the machine; V

Fig. 17 vis a rear end view of the structure shown in Fig. 18.

It will be obvious to one skilled in the art,

`after having obtained an` understanding of my invention :from the disclosures herein made, that my invention'is capable of modication without departing from the scope and spirito the invention, and 1 desi-re it to .1914, although the present machine also contains other features not embodied in said earlier case.

rlhe operating parts of the machine shown in the drawings are supported by or mounted upon a'main frame A. which in general is of open-work construction and rectangular in form. rThis frame smade up wherever possible of structural steel in order to secure comparative lightness in weight, ease of construction, and strength. I has two lower side reaches or members 1 and a cross member 2 at its forward and at its rear end.

This rectangular structure forms, in a sense, a base for the frame which may be Asupported by blocks 3 when the machine is 1n operating position. Rising Afrom each corner of this horizontal, rectangular base is an upright 4 and these four uprights support at their upper end a rectangular openwork structure similar to the base structure and comprising the upper side reaches or members 5 and the transverse members 6.

ongl ludinall section on of the kforward uprights and to the upper and lower vhorizontal reaches 1 and 5. The

lower horizontal reaches may, if desired, bel

provided with horns 9 at their ends to enable the machine to be more conveniently shifted from position to position. A pair of adjustablejacks B are hinged to lugs on the forward upper cross member 6. Between the two sides of the frame is an inclined runway or chute C alon which the sections of coal or other materia are moved to discharge them from the machine. This chute or runway extends from the lower forward portion of the frame on' an incline to the upper rear portion of the machine. It is preferably formed of a large flat plate 10 having upstanding side flanges or rails 1l this being in the form of a large flat plate so as to prevent coal dust or other material from dropping into the driving and other operating parts below. This plate, as shown more clearly in Figs. 2, 3, and 4 is strengthened and supported. by a plurality o-f longitudinal angle beams 12 lwhich restupOn and are secured to the upper rear cross member 6 and the lower forward cross member 2 of the frame. Immediately beneath the forward upper cross ing 14 formed in the upper forward corner of the frame and at its other end in a bracket 14a secured to the crossbeam 6. This shaft supports and constitutes a pivot for a supplemental Swingin frame D which, as shown more clearly in lgs. 2 and 3, comprises'a long sleeve 15 journaled on the shaft 13 and the outstanding arms 17 and 18. The outer arm 18. and the intermediate arm 17 are joinedby a cross member 19 near the inner ends of said arm for the purpose of strength. At theouter ends of the two arms 17 is a long journal sleeve or bearing 20 in which a" shaft 21 is mounted. This shaft also has a journal in the .outer end of the arm This supplemental frame is swingable 1n a ver- ,tical plane and"is adapted to be adjusted in fastened to the inside of .said upright. Thissleeve has a smooth bore in which operates a screw 25, the upper end of the screw being pivotallyconnected at 26 to the arm 18 submamie stantiall midway between the ends of said arm. T e sleeve 22 is divided into two parts connected to ether and rigidly held by the bridge 27. he space between the two parts of this sleeve accommodates a nut 28 which operates on the screw 25 to shift the screw longitudinally of the sleeve. Thus by rotat- ,ing the nut' the supplemental frame may be ralsed or lowered about its pivot shaft 13 and reta-ined in any desired position. The divided sleeve 22 rovides an arran ement whereby the adjusting nut 28 will be eld in relative position in either direction of movement of the screw 25. The shaft 21 supports the cutting mechanism so that it may be swung upwardly in a vertical plane. The cutting mechanism is in the forni of a large open or looped rectangular frame, as shown more clearly in Figs. 2, 5, and 6. This rectangular frame is formed by a substantially U-shaped portion 30, the ends of which are bridged by and fastened lto a cross bar or member 31. The outer corners of the U-shaped member 3() vare rounded oif to 'the cutting mechanism frame has two outstanding members 32 extending substantially in the same plane as the frame and alongside of the arms 17 of the swinging frame D. The faces of these upstanding members 32, 'as shown in Figs. 2 and 7, have outstanding longitudinal undercut 0r dovetailed ribs 33 which fit correspondingly shaped slots in members 34. The nembers 34 extend transversely to the'shaft 21 and are formed with bearings 35 to lit the shaft 21. These members 34, as shown clearly in Fig. 7, are firmly fastened to the shaft 21 by means of splines or keys 36 so that the rotation of the shaft 21 will rotate the membersl 34. By this construction, the entire cutting and the purpose of the dove-tailed rib 33 and slot connection of the members 32 with the` members 34 is to provide an adjustment for 21. eter of the crescent or arc shaped cut which the cutting mechanism makes. In other words, by adjusting the cutting mechanism relatively to the shaft 21, the radius of the arc which the cutting mechanism makes during the cutting operation may be varied as desired to suit the particular requirements and conditions of the mine. in which the machine is operating. In order to secure the cutting mechanism in any position to which it is adjusted, portions of the ribs 33 of members 32 are cut laway to provide room for bolt heads 37. The bolts 38 having these heads 37, extend through the members 32 where they carry clamping nuts 39 on their ends.

The heads 37 of the bolts are adapted to j itv ge the overhanging @anges of the slots in the members 34 and when the nuts 39 are tightened, the members 34 are clamped tightly a ainst the members 32, thus 'securely vholdingt ecutting mechanism in its adjusted position.v f coursein adjusting the cutting mechanism to any particular size of cut Within the range of the machine, the adjustment is preferably obtained by shifting the members 32 relatively to the members 34 so that the cutting mechanism will preferably maintain a constant. door line for themine. lln other words, to ad'ust the cutting mech-l anism, it is preferabletoplacethe cuttin mechanism, as shown in Fig.l l in 'suoi' position that it will start the cutting of the will now be described. Adjacent the arm l 18 of the supplemental frame D, the shaft 21 to be connected with or disconnected 'ner as for instance by means of theayoke 52.

carries a segmental drum or sheave 40. This sheave is keyed to shaft 21 to rotate it and hence the cutting mechanism. A rope, cable, or belt 41 is attached at oneend 42 to the sheave and in the lowermost position of the cutting mechanism is given a partial turn around the periphery of the sheave. This ropeextends downwardly toward the bottom of the frame where it passes beneath an idler sheave 43 which is supported by an upstand' ing lug or plate 44 secured to the lower sidev reach of the frame. The rope then passes rearwardly along the sidereach of the frame where it is Wound upon a large drum 45. This drum is mounted upon a shaft 46. Thel shaft 46 also carries a large spur gear 47 which isenclosed for protection in a suitable casing 48. The spur gear 47 .is adapted to be driven by a pinion 49 loosely mounted upon a shaft 50. The pinion 49 is ada ted rom the shaft 50 by means ofa clutch member 51 which may be operated in any suitable man- The yoke .52 is carried by a rod 53 having at its outer end a handle 54 by which the rod may be rotated. The pinion 49 isalso enclosed within the casing 48. lThe shaft 50 also carries a worm wheel 54 which 'is driven by a Worm 55 on an inclined shaft 56.- The 'shaft 56 inturn is driven by a worm wheel 57 mounted thereon and a worm 58 which as carried on the shaft 59 of a suitable driving motor 60. .These last mentioned parts are enclosed in the casing 61 for protection againstv damage or the entrance of grit. Thus it is seenthat the motor, throughout the medium of the mechanism just described,'

edge of the U-s apedmember 30 of the cuttates the cutting mechanism inthe 'roper direction and at the proper speed. t will 'be noted that e adjusting` device for the supplemental frame D is positioned substan- '7e tially in the same vertical plane as the segmental sheave 40 on the shaft 21. lt is thus positioned so that it acts as a lbrace for the supplemental frame to directly take the strains imposed on said frame by reason of the powerful pulling effort exerted by'the cable. 41 to rotate the cutting mechanism.

rllhe cutting chain E is in the form of a continuous loo which travels around the ting mechanism frame. This chain com prises a plurality of cutting links 65 and intermediate or connecting links 66. The cutting links are slotted at their ends to laccommodate the end portions of the intermediate links. vThe links of the chain are connected 'by .bolts 67 each cutting link carrying two bolts which pass through the ends ofthe intermediate links at the ends of said cutting links. These bolts are made removable and they are adapted to be held in position by cross or locking pins 68, (see Figs. 12 to 15). This permits the links of the chain to be removed or replaced whenever desired. At one side each cutting link has an outstanding or lateral lug 69. These lugs andthe links on which they are formed, are provided with long channels or sockets 70 for the reception of the Shanks v71 of cutting bits 72. These cuttin bits project beyond 10@ the lugs and are pointe in the direction in which the chain travels'so as to cut into the material. The sockets 70 are placed at an angle with respect to the plane of the chain and the several bits are staggered with rela- 105 l tion to each other, in other words, alternate sockets are angled in opposite directions.

`or ledge 474 upon which the chain travels and by which it is supported. The chain is locked against displacement with respect to the frame by means of small plates 75 which are riveted to lugs 76 formed on the side of 120 thej cuttingv links opposite to that from which the bits project. These plates engage the flanges 77 of plates 78` fastened in any suitable manner to the portion 30 of the cutting mechanism frame. The plates 78 and 125 the flanges 74 ,form undercut channels or slots around the edge of the portion 30 of the frame, and the plates 75 travel inA these slotsA and hold the cutting chain in position. Tt will be understood that sullicie'nt clearance 118@ should be provided for the free travel of the plates 75 throughout their entire range of movement. For this purpose the grooves formed by the flange 77 should be in proper alinement entirely around the stirrup frame, and the sprocket wheel 80, shown in Figs. 8 and 11, should be so located as to minimize friction while pulling the chain out of the groove. The sprocket wheel 80 should also be so located as to provide sufficient clearance for free movement of the chain and the extension plates 75 thereon. At one corner of the cutting mechanism frame (see Fig. 5) the cross member 31 of said frame has an arc-shaped rib 79 to facilitate the operation of the chain at this corner. At the opposite corner the chain travels around a sprocket 80 by which it is driven, Between the sprocket and the arc-shaped member 79 the chain is allowed considerable slack which is intended to permit the tautness of the chain to be adjusted as desired. The sprocket 80 which drives the chain, is mounted on and keyed to the long hub of a beveled gear 82 which isl loosely mounted by a suitable bearing on a stationary shaft 81. The beveled gear 82 meshes with and is driven by a corresponding beveled gear 83 loosely mounted by a suitable bearing on a short stationary shaft 84. rlhe gear 83 has an extended hub on which iskeyed a spur gear v85. This gear meshes with and is driven by a similar gear 86 on a shaft 87 which is parallel with the shaft 84. The shaft 87 carries at its louter end a beveled gear 88 which is driven by a beveled pinion 89 mounted on'the upper end of the long shaft 90. One of the outstanding members 32 on the cutting mechanism frame, is arranged so as to form an enclosure or casing 32a for the several gears and shafts just described. This casing contains bearings, of course, for the shafts and its purpose is to prevent coal dust or other grit vfrom damaging the various kdriving gears. rThe casing 32a as shown more clearly in Figs. 9 and 11, is divided in the plane of the axes of the two shafts 84 and 87 so as to permit the assembling and disassembling of the parts whenever desired. One portion 32b of this enclosure or casing, is in the form of a cap which is removably fastened to theportion of the casing 32a by means of the bolts 32c (Figs. 7 and 11). One of the bolts 38 which assists in clamping the member 32 with the vmember 34, is lengthened and eX tends through the cap 32", otherwise it is similar to the remaining bolts 38. IBy reference to Fig. 6, it will be observed that an extension portion 32d of la casing 32a forms a bearing for another casing 92 which encloses the beveled gears 88 and 89 and also a ortion of the shaft 90. The shaft 90, throng the various other shafts and gears just described, operatesto drive the cutting mamie chain around its frame. 1t will be noted, however, that although the shaft 87 is olfset with respect to the shaft 21, which constitutes the center of rotation of the cutting mechanism, the ability of the casing4 92 to rotate on the bearing 32c1 permits the shaft 90 to accommodate itself to the rotary movement of the cutting mechanism. In other words, the driving connection between the shaft 90 and the shaft 87 is adaptable to the relative positions assumed by the shaft and cutting mechanism during the operation of the machine, and the shaft 90 will thus always effectively transmit power to the cutting mechanism irrespective of its relative position. The casing 92 may be split longitudinally along the line 93 to permit its assembling and disassembling as desired. The motor shaft 59 extends from the motor '60 and carries a beveled gear 94 which drives another beveled gear 95.` The gear 95 is mounted on the shaft 90. It has a long sleeve 96 which is journaled in the bearing 97 and which is splined to the shaft 90 in such a manner that it will drive the shaft but will permit the' shaft 90 to slide longitudinally thereof. rlhis maintains a driving connection between the motor shaft and the shaft 90 regardless of the movement of the shaft necessary to accommodate itself 'to the rotation of the cutting mechanism. The bearing 97 is part of a casing which encloses the gears 942 and 95. rlhis vrcasing is journaled at 98 on a bearing formed on the motor frame and surrounding the motor shaft so tlat it will permit the operation of the shaft Attached to the U-shaped ymember l30 of the cutting mechanism frame, is a plurality of ropes or cables 100 which are substantially equally-spaced apart and parallel, as shown more clearly in Figs. 2, 3, and 4. 'llhese ropes may be fastened in any suitable way to the cutting mechanism frame, as by means of the connections 101. These ropes or cables extend from the cutting mechanism frame up the inclined chute or runway C and pass around sheaves 102 at the extreme upper rear end of the runway C. These sheaves are suitably mounted on a transverse shaft 103 which is journalled in'depending lugs 10ft` on the upper end of the runway. From these'sheaves the cables 100 extend forwardly where they are wound upon a plurality of individual drums 105 mounted on the transverse shaft 106 disposed beneath the nchute or runway C., These drums are all fastened on the shaft or keyed tothe shaft to rotate inunison. The shaft is journalled in bearings 106a outstanding from the motor 60. 'Bhe shaft also carries a worm wheel 107 which meshes with a worm 108. The worm 108 is loose on the shaft 56 which, as before explained, is driven from the motor. It is adapted to be conmamie The rock shaft 111 carries at its outer end, an operating member 112 in a convenient position for the operator. The worm wheel 107 and the worm 108 areenclosed in a suitlable casing 113 which is supported by a cross member'114 on the frame of the machine.

One of the ropes orcables 100 passes over an idler sheave ,114l which vraises this rope clear of the feeding mechanisms previously described. Tt 'will thus be seen that when the cutting mechanismv is rotated and cuts a crescent or arc-shaped kerf in the wall of the mi-ne, it ynecessarily pulls the ropes or cables 100 into the kerf behind itself, so that these ropes, as shown more clearly in Fig. 3, embrace the section of coal cut by the cutting mechanism. AThe section of coal will drop upon these belts or ropes 100 and it may drop as a whole section or it may break into several parts, depending, of course, upon the nature and condition of the coal, but in any event, the throwing of the clutch 109 will connect the drums into operating relation to the shaft 56 and tension will be applied to the conveyor ropes 100 to pull the section or pieces of coal up the inclined runway and discharge them from the rear end of the machine. Ur the section of coal may be intentionally broken during or at the finish of the cuttingioperation if desired, by applyingl tension tothe ropes at the same time that the cutting mechanism is rotating upwardly. This tension may be applied to the ropes 100 by any suitable means, such as a brake, which T have shown more clearly in Figs. 1 and 4. This brake comprises a drum 115 on the shaft 106 and a band 116 embracing' said drum. The band may be tightened against lthe drum by means of an operating foot lever 117 which is mounted upon a lug upstanding from the cross member 114 of the frame. Since thel ropes embrace the section, the tension applied'to the ropes will act upon the section of coal to break it.. The ropes 100 are thus employed not only to break and remove the section of coal, but also to restore the cutting mechanism to its initial position. When tension is a plied to the ropes 100 by the throwing in o the clutch 109, the clutch member 51 will of course be thrown so as to disconnect the power drum 45 from the driving power, as previously explained. llt is desirable that the cutting mechanism be capable'of being returned or restored. t0 its.

initial position at a comparatively greater rate ,of speed than that of itslcutting operation, and for this reason T malte the worm 108 and the worm wheel 10/7 of such propor-y tions that the proper speed ratio may be obtained. This worm. and gear 108 and 107, are also arranged so that when the cutting drivey the worm 108, but this worm will be disconnected from the shaft 56 by the clutch mechanism is cutting the kerf and hence pullmg upon the ropes 100, the gear 107 will. l

109 and will therefore run idly. lit is thus seen that as'each section of coal is cut and removed from its original position by the conveyor ropes 100,l it is carried up the incllned runway by said ropes, the succeeding sections assisting in pushing up the incline those which preceded them. Tn orderl to ayoid any possibility of the sections slipplng back down the incline, while the cutting -mechanism starts forward .for another cut, the bottom of the chute may be provided' withra plurality of clutching devices. These may be 1n the nature of smalldogs 120 pro- ]ectlng through sultable openings in the plate 10 of the runway. These may be pivoted at 121 beneath the plate 10 and yield-` ing'ly held in their projected position by a' sprlng 122. They are pointed in such direction that they will yield as the sections pass up the. inclined runway, but will resist the ldownward movement ofthe blocks or sections. v v

If desired, an additional conveyor may be provided in the runway C to carry the sections up the incline and discharge them from the rear end thereof. Tn Figs. 18 and 19 loo T show a modified construction in which a conveyor is employed. This conve or may be in the form of aplurality (pre erably 2 or more) of continuous chains 130 having Hights 131 thereon at intervals. These chains travel around sprockets 132 at the upperend.

of the runway. Tn this case, the sprockets may be mounted upon thetransverse shaft 103 and positioned between the ropes 100. At the lower end of the runway .thel chains travel around sprockets 133 which are mounted upon a transverse shaft 134. @ne of the chains may pass over an idler 135 beneath the runway bottom 10 in order to clear the feed mechanism. The end of the shaft 56 maybe provided with a beveled gear 136 which meshes with and drives a bevel/ed gear 137 on a transverse shaft 138 journaled in suitable bearings in the rear uprights of the frame. This shaft also carries sprockets,

o ratin said cuttin mechanism in a ver-.

tical direction to cut a solid core of material from a mine Wall, and apparatus comprising iexible means connected to said frame and adapted to be moved into they kerf cut by saidk cutting mechanism and engage-the cut material directly for removing' 'the same rearwardly.

2. The combination of cutting mechanism having an unobstructed core opening therethrough for severing a solid core of material from the wall of a mine and movable in a vertical direction, and means adapted to be moved into the korf cut by said cutting mechanism for removing the core rearwardly and for restoring the cutting mechanism' to its initial position.

3. lThe combination of a vertically rotatable cutting mechanism or'cutting a section of material from a mine wall, means attached to and adapted to be dra-wn into the lrerif by the cutting mechanism, and means tor pulling upon the aforesaid means for simultaneously removing a severed section oi material rearwardly alongr the reverse line of movement of said cutting mechanism and simultaneously restoring the cutting mechanism to initial position.

4. The combination or" a vertically rotatable cuttmg mechanism arranged to completely sever a section of material from. the wall of a mine, a frame supporting; said cutting mechanism, a exible member attached to the cutting mechanism adapted to be drawn into the kerf thereb-y behind the cutting mechanism in direct engagement with the severed section, a drum for pulling upon the iexible member in the opposite direction to remove the severed section, and means for driving said drum.

5. The combination of a vertically rotatable cutting mechanism arranged to completely sever a section of material from the wall of a mine, a frame supporting said cutting mechanism, a flexible member attached to the cutting mechanism adapted to be drawn into the keri` thereby behind the cutting mechanism to embrace the severed section, a drum for pulling upon the flexible member in the opposite direction to remove the severed. section, means for driving said drum, and a runway extending to the rea-r of the frame and along which the severed section is moved bythe iiexible member.

6. The combination of a frame, a supplemental fram'e movable thereon, a cutting mechanism supported by said supplemental frame and rotatable vertically to completely sever a crescent-shaped section of material from the Wall of a mine, a flexible belt attached to said cutting mechanism adapted during the cutting operation thereof to be ldrawn into the kei-i' and to embrace the severed section, means for pulling upon said belt to convey the severed section rearwardly and to restore the cutting mechanism to initial position, and an inclined runway ex-J mamie tending to the rear of the 'trame and up w `ich said flexible belt moves the severed section.

7. The combination of a main frame, a

'supplemental `frame hinged on the forward end of the main frame and rotatably-adjustable on its hinge, a loop. cutting mechanism rotatably mounted in a vertical plane on the supplemental frame and arranged to completely sever a crescent-shaped block ot material from the wall of a mine, a flexible belt, means actuating said-belt to rotate the cutting mechanism in the cutting direction, a second belt attached to the cutting mecha@ nism and adapted to be drawn into the keri and aroundthe severed section, means for pulling said second belt in the opposite direction to restore the cutting mechanism and to convey the severed section longitudinally, and an inclined runway for directing the moving section of material to the rear of the machine.

'8. The combination of a main frame, a supplemental frame hinged on the forward end of the main frame and rotatably adjustable on its hinge, a loop cutting mechanism rotatably mounted in a vertical plane on the supplemental frame and arranged to completely sever a crescent-shaped block of material from the wall of a mine, a flexible belt, means actuating said beltl to' rotate the cutting mechanism in the cutting direction, a second belt attached to the cutting mechanism and adapted to be drawn into the kerf and around the severed section, means for pulling said second belt in the opposite direction at greater speed to restore the cutting mechanism and to convey the severed section longitudinally, and an inclined runway for directing the moving section of material to the rear of the machine.

9. ln a mining machine, the combination with a frame, of a supplemental frame rotatably mounted thereon, loop chain cutting mechanism rotatably suspended from said supplemental frame on an axis extending in a general horizontal direction, and means for moving said supplemental frame radially to adjust the path of travel of said cutting mechanism.

10.l The combination of a main frame, a supplemental frame mounted thereon, loop chain cutting mechanism rotatably suspendedfromsaid supplemental frame on a horizontal axis, and means for varying the position of said supplemental frame to adjust the elevation of said horizontal axis and the distance 'of the path of travel of the cutting mechanism from the center of rotation.

l1. 'llhe combination oi a main frame, a supplemental frame hinged on the forward portion of said main frame, loop chain cutting mechanism rotatably and adjustably mounted on said supplemental frame on a -horiaogtal axis, and means for relatively maarre movingsaid supplemental frame and loop rchain cutting mechanism to vary the radial other end of said supplemental frame yfor oscillatory movement relatively to' said'supplemental frame, and means foradjust'ng the supplemental frame about its pivota connection to said main frame'to adjust the position of said loop chain core cutting mechanism. v

13. A mining machine adapted to cut coreav of material in a mine chamber from the floor to the roof thereof, comprising a main frame, a supplemental frame pivoted at one end on a horizontal axis to said main frame,

loop chain core cutting mechanism having.

an unobstructed core 'opening therethrough and rotatably mounted on va horizontal axisY -at the other end of said supplementall frame for swinging movement from the Hoor to the roof of the mine chamber, and a rigid adjustable brace for swinging the supplemental frame about its pivot and holding it in its adjustedposition.

14. In a mining machfne,the combination with a main frame, of a supplemental frame pivoted at one end `on a horizontal axis to said main frame, loopchain core cutting mechanism mounted to swing on a horizontal axis at the other end of said supplemental frame, means for adjusting the supplemental frame about its pivot relatively to said main frame to adjust the heightof said loop chain core cutting mechanism, a drum attached to said cutting mechanism, a belt wound on said drum, and means for applying tension to said belt to swing said cutting mechanism on its pivotal connection to said supplemental frame.

15. ln a mining machine, the combination .with a main frame, of a supplemental frame pivoted at one end on a horizontal axis to said main frame, loop chain core cutting mechanism rotatably mounted on a horizontal axis at the other end of said supplemental frame, means for adjusting the supplemental frame about its pivotal connection to said main frame to vary the height of said loop chain core cuttingmechanism, a drum attached to said cutting mechanism, a belt wound on said drum, means for applying tension to said belt to rotate said-cutting' mechanism toeflect the feed thereof, a shaft extending to said cutting mechanism, a driving connection between the' said shaft and said cutting mechanism, and means mounted on saidy main frame for driving said shaft. Y

16. ln a mining machine,- the combination with a supporting frame, of endless loop chain core cutting mechanism having an unobstructed core opening. therethrough and pivotally mounted on sald supporting frame for movement relatively thereto on a horizontal axis, means for operating said core cutting mechanism including pivotal feeding movement on said supporting'frarnez a driven shaft, a mounting movablei bodily With the cutting mechanism for su porting said driven shaft in a position o set with respect to the pivotal axis of said cutting mechanism, and driving connectionsbetween l y said driven shaft and the chain of said cutin its various adjusted positions, comprising flexible bevel. geared driving connections between said main frame and said core cuttingmechanism.

18. ln a'mining machine, the combination with a main frame, of a source of power.

mounted thereon, core 'cutting mechanism having an unobstructed core opening the-rethrough' and mounted to swingen a horizontal-axis relatively to said main frame, said core cutting mechanism' embodying a con tinuous travelling cutting chain, means for feeding said core cutting mechanism by swinging the samev relatively to said main frame, and flexible driving connections between said source of. power and said chain for driving the latter during the feed thereof to sever a large section of material from a mine wall.

19. ln a mining machine, the combination with a supporting frame, of kerf cutting mechanism mounted on saidA frame to swing lon a substantially horizontal axis, and emllio tween said source of power and the other side of said cutting mechanism`r for actuating' said chain duringthe swinging. feed thereof to edect the cuttingof an upright 'core in a 'mine wall.

20. lin a mining machine, the combination with a supporting frame, of core cutting mechanism having an unobstructed core opening therethrough and 'mounted on said supporting frame for pivotal movement of a substantially horizontal axis and embodying a ,continuous chain cutter occupying a single plane substantially radial to the center of rotation of said cutting mechanism, means at one side of said cutting mechanism for rota-ting it as a whole to ed'ect arcuate feeding movement thereof, a source of power on said supporting frame, a shaft connected to said source of power, and means offset with 1 spect vto the center of rotation of the cutting mechanism for getting power from the shaft to the chain during the feeding movement of said cutting mechanism to effect the cutting of an upright core in a mine wall in advance of said frame.

2l. The combination of a frame, a rotary cutting mechanism positioned at the forward end of said frame to swing on a horizontal axis and arranged to cut an upright crescentshaped section of material from a vertical wall of a mine in front of said frame, flexible means adapted to be drawn into the kerf by said cuttting mechanism and embrace the section of material,y and means for pulling upon said flexible member' to restore the cutting mechanism and remove the section of material.

22. The combination of a frame, a rotary cutting mechanism positioned at the forward end of said frame to swing on a horizontal axis and arranged to cut an upright crescent-shaped section of material from the wall of a mine, a cable attached to the cutting mechanism to be drawn into the kerf by the rotation thereof into direct engagement with the cut section of material, and means yat the rear of the machine for pulling upon said cable to restore the cutting mechanism and discharge vthe section from the rear end 4of the frame.

23. llhe combination of a frame, a runway extending from the forward to the rear endof the frame, rotary cuttting mechanism positioned at the forward end of the runway and arranged to sever a crescent-shaped section of material from a vertical wall of a mine in front of said frame, a plurality of flexible members extending along the runway and attached to the cutting mechanism to be drawn into the kerf thereby, and means for pulling said flexible members to restore the cutting mechanism and discharge the severed section from the rear of the frame.

24. The combination of a frame, a runway extending from the forward to the rear end of the frame, rotary cutting mechanism positioned at the forward end of the runway and arranged to sever a crescent-shaped section of material from the wall of a mine, a plurality of dexible members extending along anemie .the runway and attached to the cuttin mech- `arranged to sever a crescent-shaped section of material from the wall of a mine, a plurality of iexible members extending along the runway and attached to the cutting mechanism to be drawn into the kerf there,

b y into direct engagement with the cut section of material, a drum beneath said runway and about which the fiexible members are wound, and means in said runway for restraining the movement of the sections toward the forward end of the runway.

26. The combination of a frame, an ini clinedrunway extending from the forward to the rear end thereof, rotary cutting mechanism positioned `at the forward end of saidrunway, means for rotating said cutting mechanism, a pluralityof winding drums positioned beneath the runway, a plurality of conveyor ropes extending from said drums along the runway and attached to the cutting mechanism and adapted to be pulled into the kerf by the cutting mechamsm into direct engagement with the cut section of material, a source of power, and means for connecting said drums to the source of power to apply tension to the ropes and restore the cutting mechanism1 27. The combination of a frame, an inclined runway extending from the forward to the rear end thereof, rotary cutting mechanism positioned at the forward end of said run-way, means for rotating said cutting mechanism, a plurality of Winding drums positioned beneath the runwa a plurality of ropes extending from said rums along the runway and attached to the cutting mechanism and adapted to be pulled into the kerf by the cutting mechanism into direct engagement with the cut section of material, a source of power, and means for applyin tension to the ropes during the rotation o said cutt1nomechanism in the cutting direction.

28.. he combination of a frame, an inclined runway extending from the forward to the rear end thereof, rotary cutting mechanism positioned at the forward end of said run-way, means for rotating said cutting mechanism, a plurality of winding drums positioned beneath the runway, a plurality of ropes extending from said drums along the runway and attached to the cutting mechanism and adapted to be pulled into the kerf by the cutting mechanism into direct engagement with the cut section of material,

Maaate a source of powen'means for connecting saiddrums to the source of power to apply tension to the ropes and restore the cutting mechanism, andmeans forV driving said drums, pulling said ropes and restoring the cutting mechanism at a greater speed.

29. The combination of a main frame, an adjustable supplemental frame pivoted lon said main frame on a horizontal axis, a substantially rectangular open cutting mechanism frame pivoted. on a horizontal axis on said supplemental frame, means for adjusting said cutting mechanism frame relatively to the center of rotation thereof, and a continuous cutting chain travelling around the edge of said cutting mechanism -frame to produce an incision 1n a mine wall leaving a solid core.

30. rIhe combination of a main frame, an adjustable supplemental frame pivoted on said main frame on a horizontal axis, a substantially rectangular open cutting mechanism frame pivoted on a horizontal axis on said supplemental 'fra-me, means for adjusting said cutting mechanism frame relatively to the center of rotation thereof, a continuous cutting chain travelling around the edge of said cutting mechanism frame to out a solid core froma mine wall, means at one side of said cutting mechanism frame for rotating the frame, and means at the'other side of said cutting mechanism frame foro drilving the chain.

31. The combination ofa main frame, an adjust-able supplemental frame pivoted on ysaid main frame on a horizontal axis, a substantially rectangular open cutting mechanism frame pivoted on a horizontal axls on said supplemental frame, means for adjust-- ing said cutting mechanism frame relatively to the center of rotation thereof, a continuous cutting chain travelling around the edge of said cutting mechanism frame, means at one side of said cutting mechanism frame for rotating the frame, means at the other side of said cutting mechanism frame for driving the chain, a. plurality of conveyor ropes attached to said cutting mechanism frame to be drawn into the kerf and extending to the rear end of the main frame, and means for pulling upon said conveyor 'ropes to restore the-'cutting mechanism to initial position and convey the severed section of material to the rear of the machine.

32. The combination of a main frame, an

adjustable supplemental frame pivoted on said main frame on a horizontal axis, a substantially rectangular open cutting mechanism frame. pivoted on a horizontal axis on said supplemental frame, meansfor adjusting said cutting mechanism frame relatively to the center of rotation thereof, a continuous cutting chain travelling around the edge of said cutting mechanism frame, means at one side of said cutting mechanism frame cuttin for rotatin the frame, means at the other side of sai cutting mechanism frame for driving the chain, a. plurallty of conveyor ropes attached to said cutting mechanism I section ofmaterial.

33. lin a mining machine, the combination with a supporting frame, of loop chain core mechanism mounted on the forward end of said frame to swing on-a horizontal axis, said core cutting mechanism having an` unobstructed 'core opening therethrough," means for operating saldloop chain core cutting mechanism includin feeding movement thereof relatively to sai frame to cut a core in a mine wall adjacent said frame, and means for .adjusting the A'position of the entire loop chain core cutting mechanism relatively to said supporting frame to vary the height of the core cut in the mine wall by said cutting mechanism adjacent said frame.

34:. The combination of a main frame, a supplemental frame mounted thereon, cutting mechanism suspended from said supplemental frame on a substantially horizontal axis to cut a solidcore of material from a mine wall in a vertical direction, and means for adjusting said supplemental frame to vary the height of said horizontal ,axis of rotation of said cuttin mechanism.

35g. 1n a vmining mac ine, the combination with a supporting` frame, of a source of power mounted thereon, core cutting mechanism mounted on said supporting frame in position for cutting an upright core in a minewall adjacent said supporting frame, means for bodily adjusting said core cutting mechanism to vary the up and down cutting range thereof relatively to said supporting frame, and flexible driving connections between said source of power and said core cutting mechanism adaptable to the adjustment of said cutting mechanism to effect the transitend and up which they convey the severed mission of power to said cutting mechanism operation of saidvloopfchain core cutter relatively to said supporting frame.

37. In a mining machine, the combination with a supporting frame, of loop cha-in core cutting mechanism mounted on said frame to swing in an upright arc on a horizontalaxis, means for operating said loopv chain core cutting` mechanism toont a solid core of material from a. mine Wall between the floor and the roof of a mine chamber, and

mechanism for adjusting the height of such' horizontal axis to a position approximately midway between the said floor and roof, to adapt the machine to cutting cores between the Hoor and roof of any one of vvarious mine chambers in which the heights of the ceilings vary.

38. In a mining machine, the combination with a supporting frame, of a core cutter pivotally mounted on said frame to swing on an axis extending in a general horizontal directiomand means for shifting if'ertically the said pivot of said core cutter relatively to said supporting frame to vary the cutting range of said core cutter.

39. ln a mining machine, the combination with a main frame, of a'rotary loop chain core cutter mounted on said main frame to swing on a horizontal axis, means f or operating said core cutter to cut a. solid core of material from a mine wall adjacent said frame, `and means for shifting the elevation of the center of rotation of said core cutter relatively to said frame to vary the cutting range of said critter relatively to said frame.

40. The combination of a frame, cutting mechanism rotatable on a horizontal axis thereon embodying a frame having an unobstructed core opening therethroiurh and a. chain cutter travelling thereon, and means for adjusting bodily said frame and cutting chain relativelyl to the axis of rotation ot said cutting mechanism.

41. In a mining machine, the combination' with a supporting fra-me` of core cuttingmechanism mounted to swing on a horizontal axis on said supporting frame, means tor operating said core cutting mechanism including' swinging feeding movement thereof tocut 'a solid core of material from a mine Wall adjacent saidframe, and means for adjusting the eleva-tion of the center of swing of said core cutting mechanism relatively to said frame to var the cutting range of said core cutting mec ianisni relatively to said supporting fra-me while the latter remains stationary.

42. In. avmining machine. the combination with a supporting frame, of cutting mechanism mountedon a horizontal axis for arcuate swinging movement relatively to said frame, a rope drum connected to said cutting mechanism to move bodily therewith, a rope connected to said drum and extending around the same, means for exerting a pull on said rope to effect swinging feeding movement of said cutting mechanism, and an adjustable brace supporting device mounted on said supporting frame in position to support said cutting,mechanism with the said horizontal axis in various positions relatively to said supporting frame. A

43. In a lmining machine, the combination with a main frame, of a supplemental frame mounted on said main frame for movement relatively thereto, a shaft on said supplemental frame, cutting mechanism mounted on said-shaft, a large sheave at one end of said shaft, a rope connected to said sheave and extending around the same, means on said main frame for pulling said rope to effect the swinging of said cutting mechanism to feed the same, means for actuat-ing said cutting mechanism during the feeding movement thereof, and an adjustable brace between said main frame and said supplemental frame foi holding the latter rigidly in adjusted position during the operation of said cutting mechanism.

4i. The combination'of a frame, an inclined run-way supported by said frame, loop chain cutting mechanism at the forward end of said positioned beneath said run-way, a cable extending from said operating mechanism to the' cutting mechanism for swinging' the cutting mechanism, and a cable extending from said operating mechanism to the cutting mechanism for restoring said cutting mechanism. 45. In a mining machine, the combination with a frame, of an inclined platform, cutting mechanism positioned at the forward end of said platform to cnt a core of matcrial from a vertical mine wall, a cable extending fiom the cutting mechanism. a drum beneath said platform for pulling` said cable to rotate the cutting mechanism, a plurality of additional drums positioned beneath said platform. a plurality of belts extending from said additional drums to the rear end of the platform and thence along the latter to the cutting mechanism for restoring the cutting mechanism, and a source of power for driving said first named rope drum and said additional rope drums.

46. In a mining machine, the combination with a supporting frame, of core cutting mechanism mounted thereon and having an unobstructed core opening therethrough, means for operating said core cutting mechanism including swinging feeding movement thereof on a horizontal axis having a pre determined relation to said supporting frame, means for restoring the core cutting mechanism to approximately initial position` and a motor-common to said operating means and said restoring means.

47. In a mining machine, the combination with a swinging loop chain cutting mecharun-way, operating mechanism` lil() l io nism havin an unobstructed core opening therethroug cfu-means for operating said cutting mechanism including the feed thereof to cut a solid core of material from a mine wall, mean's for restoring said cutting mechanism, a ooon driving motor, a locking worm driving connection between the motor shaft and the cutting mechanism operating means, and a non-locking worm driving connection between the motor shaft and the .restoring means.

48. 1n a mining machine, the combination with l vertically swinging loop chain core cutting mechanism, of means for operating said .cutting mechanism including the feed thereof to cut a core of material from amine wall, means for restoring the cutting mechanism, a common drlving 'motor, a locking worm driving connection between the motor shaft-and the cutting mechanism operating means, anon-locking worm driving connection between the motor shaft and the restoring means, and means for connecting and disconnecting -said non-locking connection atv-will.

49.` A mining`machine comprising' a U- shaped frame havin opening therethroug a travelling endless loop chain cutter mounted on said U-shaped frame, aswinging frame, a horizontal shaft for supporting said swinging frame, means for adj ustably securing said U-shaped frame radially to said swinglng frame, a supporting frame for said shaft, said Isupporting framecomprising forwardly extending arms to give freedom of movement of said U- shaped frame throughout approximately a semi-circle in advance of said shaft and saidsupporting frame, means for actuating said chainl cutter" by causing-the vsametov travel along said U-shaped frame transversely vto the feeding path ofv travel thereof,

and apparatus for feeding the chain cutter during the actuation thereof, by swinging said U-shaped frame transversely to. the path of travel of said 'chain cutter thereon.

50. ln a mining machine, the combination with a frame, of means mounted thereon for cutting an upright core in a mine wall from a position near the floor of the mine chamber toward the roof thereof, said-cutting means having an unobstructed core opening therethrough, mechanism for oper- 'ating said cutting means, and mechanical apparatus acting on the cut material when dislodged for taking it backl from the mine wall along said frame.

.51. 1n a mining machine, the combination rwith loop chain core cutting mechanism having an unobstructed core opening therethrough and mountedy for up and vdown swing yon a substantially horizontal axis, of.' means for operating said loop chain core cutting mechanism including upward feed thereof toward the roof of the mine chamber an unobstructed fcorey wall lmmediately after being dislodged therefrom by said core cutting mechanism. 52'. ln .a mining machine, the combination Awith a supporting frame, of loop .chain core cutting mechanism having an unobstructed .core 'opening therethrough and mountedv on said frame for rotation on a substantially horizontalaxis, 'means for operating said cutting mechanism including upward swing. thereof to cut a solid core of material in a mine wall toward the roof of a mine cham- A ber, and mechanism mounted on said. frame for adjustin the height of said lhorizontal axis relative yto said frame.'

y 53. In a mining machine,lthe combination witha supporting frame, of loop. chain core cutting mechanism having an unobstructed' core opening therethrough and mounted on saidframe to. swing on an axis extending v1n a general horizontal dlrectlon, of means for operating said core cutting' mechamsm including swinging feeding movement thereof relatively tol said frame, and mechanism for-holding the cutting mechanism in adjusted posltionfas to radial length in approximately the plane of said cutting mechanism.

54. Ina mining machine, the combination with a supporting frame, of core cutting mechanism lmounted on said framev forfar` .floor to the roof of the mine chamber andmechanism assisted by the weight of the severed core vfor returning the cutting mechanism toward initial position in'la d1- rection reverse to the feeding direction.

55. In a mining machine, the combination with a main frame, of forwardly projecting arms, a loop chain cutter suspended from the outer ends of said arms on a horizontal axis of rotation, means for moving said loopv chain cutter on said horizontal axis semi-cylindrically', and means for moving the severed section-of material circumferentially toward loading position.

56. In a mining machine, the combination with a loop chain cutter comprising a frame having an unobstructed receiving opening extending therethrough and cutting devices carried by the forward face of said frame, of a horizontal axial pivotal support `for said lop 'chain cutter, Iand means for adthe height of said axial support.

n a mining machine, thecombmation iso 

